We weren't exactly sure whether Apple was going to approve third-party video calling apps using the front camera on the iPhone 4, but good news: the answer is "yes." Fring just slid in a new version of its longstanding iPhone app today featuring support for video calling, which is pretty awesome in and of itself -- but the real news is that it works just fine over 3G, as you can see in our quick test above between Chicago and London. This opens the door for services that could have potentially broader implications than FaceTime itself, since Apple's service is limited to WiFi and currently only works between iPhone 4s. Just make sure you're wearing clothes when you call, alright?

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Fring update approved for iPhone, does video calling with front cam over 3G